Improvement in fire-escape ladders



w. w. PARSONS,

Fire-,Escape Ladders.

N0. 142,409. PatentedSeptem|uer2,873.`

' j' .2 fw! y Witnesses: l Inventur:

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WALTER W. PARSONS, OF STA'NS'IEAD, CANADA.

IMPROVEMENT `IN FIRE-ESCAPE LADDERS.

Specification forming part of Letters Patent No. 142,409, datedSeptember 2, 1873 application led July 19, 1873.

To all whom it may concern:

Be it known that I, WALTER W. PARSONS,

. of Stanstead, Province of Quebec, Canada,

have invented a new and Improved Fire-Es cape, of which the'followin gis a specification: The invention consists in the improvement ofnre-escape ladders, as hereinafter described and pointed out in claim,to wit, of a novel mode of fastening the bars to the ropes by which theyare suspended.

Figure lis a front elevation of my improved refescape ladder. Fig. 2 isa sectional elevation on the line wm of Fig. l. Fig. 3 is an enlargeddetail sectional view of the bar and mode of fastening taken on the liney y, Fig. l, and Fig. 4. is a section on the line z z of Fig. 3.

Similar letters of reference indicate fcorresponding parts. p

A represents a pair of suspending ropes, With cross-bars B at intervals,constituting a ropeladder. At the lower end of the ladder a hook, C, isattached for fastening it to the ladder to the Window-sill I or othersuitable part of the building, in the manner indicated in Fig. 2. Thecrank K is jointed to the roller D, as shown at L, and the project-ingpart of the roller is grooved, as indicated by the dot-V ted line. M, sothat the crank can be folded down in the roller compactly for storingthe ladder.

For securing the cross-bars B to the ropes cheaply, Ihave a hole, N,bored through them near each end, and a slot, O, extending from the endsto said holes, so that the latter can be contracted a little to bind therope so as to be held fast; and Iv drive slightly-conical ferrules P onthe bars, which are slightly tapered from the holes to the ends to sobind the bars upon the ropes, whereby the said bars will be firmly heldin their places. This mode of fastening the bars is very effective, andat the same time simple and cheap.

These fire-escape ladders can be constructed cheaply. space in a room,and they can be readily adjusted when required for use.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The method of fastening the bars to the ropes by the holes N, slits O,and tapering ferrules P, substantially as specified.

' W'ALTER YV. PARSONS.

Witnesses:

L. K. BENTON, F. S. A. PELLETIER.

They can also be stored in a small

